Mamdani Muhammad, Sykora Kathy, Li Ping, Normand Sharon-Lise T, Streiner David L, Austin Peter C, Rochon Paula A, Anderson Geoffrey M
Institute for Clinical Evaluative Sciences, Toronto, ON Canada.
BMJ. 2005 Apr 23;330(7497):960-2. doi: 10.1136/bmj.330.7497.960.
Although confounding is an important problem of cohort studies, its effects can be minimised to enable valid comparison
尽管混杂是队列研究的一个重要问题,但其影响可以降至最低,以便进行有效的比较。